Woodworking-machine.



J. W. GRAY.

WDODWORKING MACHINE.

APPLICATION FILED APR.2.1911.

Patented Nov. 5,1918.

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1. W. GRAY. WOODWORKING MACHINE. APPLICATION HLED APR-2.1917. 'LQQ QWPatented Nov. 5, 1918.

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l/I/l/E/l/TOR Jan/nus N Gra ATTORNEY ml: ms PIIIME m. manor-11m.IASIIIIIEM- n. r.

JAMES W. GRAY, 01E TACOMA, WASHINGTON.

WOODWOJEEKING-MACHINE.

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Application filed April 2, 1917.

To all whom it may concern:

Be it known that T, JAMns W. GRAY, of the city of Tacoma, county ofPierce, and

- State of Washington, have invented new and useful Improvements inWoodworking-Ma chines, of which the following is a specification. 1

My invention relates to woodworking machines for finishing the flatsurfaces of woods for all kinds of finished products. T have hereinadded novel means by which my former invention is improved. The objectof my improvement is not only to obtain a smoothly finished surface, butto provide improved mechanical devices whereby the rotating disks withthe cutters and smoothers fixed therein may be perfectly adjusted toeach other and to the surfaces being finished.

T attain these objects by the mechanism illustrated in the accompanyingdrawings in which i Figure 1 is a face view of the disks show ing thecutters and smoothers fixed therein. Fig. 2 is a side view of Fig. 1with one-half shownin section. Fig. 3 is a section through one ofcutters. Fig. 4 is a top view of the opposite end of the shafts on whichdisks are mounted, with tubular shaft in longitudinal section, showingmechanism whereby disks are adjusted Fig. 5 is a side view of Fig. 4.Fig. 6 is a face view of the split ring designed to engage the adjustinghead.

Similar characters refer to similar parts in the separate views.

My invention comprises an annular disk 1 with a central disk 2 as in myformer application, and is to be operated as described therein. Theouter or annular disk contains the slots 5 set at angles approximately30 degrees with the radii of the disk. The angle of inclination is madeto alternate so that each knife or cutter is appositely inclined fromthe one preceding it as described in my former application and for thepurposes set forth. lit will be observed in Figs. 2 and 3 that thesetting of the knives has been improved by using two adjusting screws 9and two set screws 10 instead of one each as formerlyshown. This enablesme to perfectly adjust and .fix the knives 8 in the cutter head 1. Theclamping plates 6 and the knife slots 7 remain as in my former application. The width of the knives 8 may be ValilBCl to suit the annularwidth of the dis r 1.

Tn my new improvement ll have designed specification of JtettersJE'atent.

Serial No. 159,358.

to make the central disk 2 some larger in proportion to the outerdisk 1. than formerly. In the outer part of the face of the centraldisk2 are grooves extended in triangular or other form into which, bymeans of set screws 12 are firmly secured thin files or rasps 13 whichproduce a perfectly smooth and finished surface on the face of thematerial after the knives 8 have surfaced it. By this novel mechanismthe material will be perfectly finished in one operation. No

sandpapering will be required, thus saving the expense of the sandpapermachine and thelabor of handling the material there through. The surfaceis thereby finished smoothly, free of grit and sand marks.

. It will he observed the disks 1 and 2 are made sufficiently strong andheavy for the required service. Disk 2 is recessed into disk 1 and eachhas a proper hub for shaft mounting. The annular disk 1 is set on aheavy tubular shaft 3 and disk 2 is mounted on a solid shaft 4 looselyinserted within shaft 3, and so fitted together that each turn about onecentral axis. The disks are so milled that 2 fits perfectly into 1, andeach so mounted that the planes of their faces are parallel.

Central disk 2 is made adjustable inde pendent of disk 1 by means ofshaft 41 which extends lengthwise through tubular shaft 3. A groovedhead 14: is firmly screwed onto the opposite end of shaft 4:. The end oftubular shaft 3 and theneck 15 of the grooved head 14. are milled to fiteach other. Set screws 16 through the side of shaft 3 engage a keyway inneck 15 and cause the two shafts 3 and l with the disk 1 and 2respectively mounted thereon to rotate together. See Figs. 4 and 5.

A split ring 17 (see Fig. 6) is set to engage the groove 18 in head 14when bolted to the arms of the yoke 19. The center of yoke 19 is firmlylocked on the threaded stem 20 which is supported on a fixed bracket arm21 with screw hand wheels 22 and 23 on each side thereof. The bracketarm 21 is firmly bolted to the bearing box block 24 in which shafts 3and 4t rotate. By means of the screw hand wheels 22 and 23 on each sideof the fixed bracket arm 21, the shaft 4 and the central disk 2 can beadjusted to the annular disk 1 while the two disks are in rotation. Thefaces of the tinishing files or rasps can thus be so accurately adjustedto the plane of the cutters as to Patented Nov. 5, T218...

finish the Wood surface perfectly and hold the finished surface clear ofthe knives passing in the rear.

With this design of machine the manufac turers can finish their productsin'a satisfactory manner. It eliminates the probability ofcross-grainedportions of material being made "unfit for the purposes desired byfinishing them sufficiently smooth without the necessity. of sandfinishing.

Tlie'application of the cutters are so arranged as to press on thecross-grained portions 'ofthe surface in place of lifting or tearing itout. This eliminates all knife marks, and produces a smooth surface.When desired for finished smoothing only, the central disk can beadjusted independeIi-tly of the annular cuttin disk Without materiallyreducing the stocr in thickness.

In surfacing air-dried stock it is found most satisfactory results aresecured by simply reversing the cutting knives end for end. This willplace the "beveled face of the cutting knife 8 away from the woodinstead of neXt-"toit, as shown in Fig. 3.

It is to be observed that shafts 3 and 4 rotate in a horizontal positionwith the face of each ofthe' disks] 1 and2 in a vertical plane.

Itis to be further observed that an opposite pair of disks isdesigned tobe used when surfacing botlrsides of the lumber. Then the mechanismherein described is .but for one-half of a complete finishing machine.Any usual means of adjustment and methods of construction not mentionedherein will tensed in assembling a machine with my improvements.

I do not limit myself to any size or pro portionin'designing andconstructing the cutting and finishing disks, but reserve the righttoso'vary and proportion the same as manufacturing demands may require.

Having described my invention, what I claim as new and desire to secureby Letters Patent is 1. In a woodworking device as described, thecombination with a central disk, said disk surrounded with an annulardisk into which it is fitted and so mounted as to rotate therewith, of aplurality of knives mounted in the annular disk a plurality of oblongfiat files or rasps set in grooves cut in triangular or other form inthe face of said central disk, and said disk so adjustably mounted thatthe face of the files may be made to conform with the cutting edges ofthe knives mounted in the said annular disk, to regulate the depth oftheir cut and to smoothly finsh the materialsurfacedby said knives. I

2. Ina woodworking device as described, the combination with an annularcutting disk and a central smoothing disk, each independently mounted torotate on a co1nmon' axis, of an adjusting device attached to theoppositeend of the shaft of said central disk, said device comprising afixed grooved head on the end of said shaft, the neck of saidgroovedheadbeing fitted into the tubular shaft of said annular disk, set screws ononeside .of said tubularshaft engaging a slip key-way in said neck ofsaid grooved head, a split ring fitted into the groove of said head,said splitring mounted.

on a yoke, said yoke having a central threaded stem, said steinsupported bya bracket armfixed on the bearing ofsaid tubular shaft, andsaidjcentralstem having hand set screw ,on'each sideof said bracket armwhereby the said central shaft and the said central disk'mounted thereoncan be adjusted to the annular disk and, the cutters thereon whilesaiddisks a'rein rotation.

JAMESWGB'AXYIH I Copies of this patent may be obtained for five centseach, by addressing the Commissioner 0! Paton,

Washington, D. G."

